private static extern DVBError CDVBFrontend_GetChannel( IntPtr pData, out Channel_C rChannel );
private static extern DVBError CDVBFrontend_SetChannel( IntPtr pData, Channel_C rChannel, bool bPowerOnly );
/// <summary>
/// Wählt eine Quellgruppe an.
/// </summary>
/// <param name="group">Die Daten zur Quellgruppe.</param>
/// <returns>Gesetzt, wenn es sich um eine DVB-C Quellgruppe handelt.</returns>
private bool SendChannel( CableGroup group )
{
// Not us
if (group == null)
return false;
// Validate
if (FrontendType != FrontendType.Cable)
throw new DVBException( "Expected " + FrontendType.ToString() + " Channel" );
// Helper
var channel =
new Channel_C
{
Frequency = group.Frequency,
SymbolRate = group.SymbolRate,
};
// Spectrum inversion
switch (group.SpectrumInversion)
{
case SpectrumInversions.On: channel.Inversion = SpectrumInversion.On; break;
case SpectrumInversions.Off: channel.Inversion = SpectrumInversion.Off; break;
case SpectrumInversions.Auto: channel.Inversion = SpectrumInversion.Auto; break;
default: channel.Inversion = SpectrumInversion.Auto; break;
}
// Modulation
switch (group.Modulation)
{
case CableModulations.QAM16: channel.Qam = Qam.Qam16; break;
case CableModulations.QAM32: channel.Qam = Qam.Qam32; break;
case CableModulations.QAM64: channel.Qam = Qam.Qam64; break;
case CableModulations.QAM128: channel.Qam = Qam.Qam128; break;
case CableModulations.QAM256: channel.Qam = Qam.Qam256; break;
default: channel.Qam = Qam.Qam64; break;
}
// Check supported modes
switch (group.Bandwidth)
{
case Bandwidths.Six: channel.Bandwidth = BandwidthType.Six; break;
case Bandwidths.Seven: channel.Bandwidth = BandwidthType.Seven; break;
case Bandwidths.Eight: channel.Bandwidth = BandwidthType.Eight; break;
case Bandwidths.NotDefined: channel.Bandwidth = BandwidthType.None; break;
default: channel.Bandwidth = BandwidthType.Auto; break;
}
// Process
CheckChannel( CDVBFrontend_SetChannel( m_Class.ClassPointer, channel, false ) );
// Check up for synchronisation
Channel_C val1, val2;
// Get channel twice
CheckChannel( CDVBFrontend_GetChannel( m_Class.ClassPointer, out val1 ) );
CheckChannel( CDVBFrontend_GetChannel( m_Class.ClassPointer, out val2 ) );
// Did it
return true;
}
private static extern DVBError CDVBFrontend_GetChannel(IntPtr pData, out Channel_C rChannel);
private static extern DVBError CDVBFrontend_SetChannel(IntPtr pData, Channel_C rChannel, bool bPowerOnly);
/// <summary>
/// Wählt eine Quellgruppe an.
/// </summary>
/// <param name="group">Die Daten zur Quellgruppe.</param>
/// <returns>Gesetzt, wenn es sich um eine DVB-C Quellgruppe handelt.</returns>
private bool SendChannel(CableGroup group)
{
// Not us
if (group == null)
{
return(false);
}
// Validate
if (FrontendType != FrontendType.Cable)
{
throw new DVBException("Expected " + FrontendType.ToString() + " Channel");
}
// Helper
var channel =
new Channel_C
{
Frequency = group.Frequency,
SymbolRate = group.SymbolRate,
};
// Spectrum inversion
switch (group.SpectrumInversion)
{
case SpectrumInversions.On: channel.Inversion = SpectrumInversion.On; break;
case SpectrumInversions.Off: channel.Inversion = SpectrumInversion.Off; break;
case SpectrumInversions.Auto: channel.Inversion = SpectrumInversion.Auto; break;
default: channel.Inversion = SpectrumInversion.Auto; break;
}
// Modulation
switch (group.Modulation)
{
case CableModulations.QAM16: channel.Qam = Qam.Qam16; break;
case CableModulations.QAM32: channel.Qam = Qam.Qam32; break;
case CableModulations.QAM64: channel.Qam = Qam.Qam64; break;
case CableModulations.QAM128: channel.Qam = Qam.Qam128; break;
case CableModulations.QAM256: channel.Qam = Qam.Qam256; break;
default: channel.Qam = Qam.Qam64; break;
}
// Check supported modes
switch (group.Bandwidth)
{
case Bandwidths.Six: channel.Bandwidth = BandwidthType.Six; break;
case Bandwidths.Seven: channel.Bandwidth = BandwidthType.Seven; break;
case Bandwidths.Eight: channel.Bandwidth = BandwidthType.Eight; break;
case Bandwidths.NotDefined: channel.Bandwidth = BandwidthType.None; break;
default: channel.Bandwidth = BandwidthType.Auto; break;
}
// Process
CheckChannel(CDVBFrontend_SetChannel(m_Class.ClassPointer, channel, false));
// Check up for synchronisation
Channel_C val1, val2;
// Get channel twice
CheckChannel(CDVBFrontend_GetChannel(m_Class.ClassPointer, out val1));
CheckChannel(CDVBFrontend_GetChannel(m_Class.ClassPointer, out val2));
// Did it
return(true);
}
